Strap fastening tool



Oct. 7, 1952 'M ,1, MOANENY 2,612,803

STRAP FASTENING TOOL Filed April 18, 1945 I 3 Sheets-Sheet l INVENTOR v v e 4 BY M fln/E/VY ATTORNEY Patented Oct. 7, 1952 UNITED GFFICE 6 Claims.

take-up of the strap may be easily and quickly efiected.

' An important object of this invention is the provision of a tool of this class whereby the length of the stroke of the ratchet. operation may be easily and quickly changed. A further important object of this invention is to provide a tool of this class having a novelly constructed head for both holding or clamping the buckle of the strap fastening means and for yieldably but tightly gripping or clamping the strap in the desired adjusted position with respect to the buckle.

Another important object of'this invention is to provide novel and efficient jaw means for drawing the strap through the buckle and for quickly releasing the strap for taking another bite or grip upon the strap in order to effect another tightening stroke.

Affurther important object of this invention.

is to provide a novel shearing means for cutting or shearing the strap to the desired length and also for forming the end of the strap.

A still further important object of this invention is to provide a combination shearing and forming means in connection with a strap tightening means whereby the strap may be sheared and formed after being drawn sufficiently tight.

Still another important object of this invention is to provide novel means for folding the end or sheared portion of the strap into a holding buckle.

An important object also of this invention is to provide a tool of this class which is particularly small,,light of weight,' and one which is easy to handle and easy to operate.

With these and other objects in view, as will appear hereinafter, I have devised a strap fastening tool having certain novel features of con struction, combination, and arrangement of parts and portions, as will be hereinafter described in detail and particularly set forth in the appendedclaims, reference being had to the accompanying drawings, and to the characters of reference thereon, which form i part Of this application, in which:

Fig. 1 is a fragmentary top view of my Strap-1 fastening tool in a preferred form;

Fig. 2 is a fragmentary side elevational view thereof, showing by dotted lines the moved position of certain'members;

Fig. 3 is an enlarged fragmentary end -'view thereof taken at 3-'3 of Fig. 2; I

Fig. 4 is a perspective view of the buckle and strap with one end of the strap cut and formed, ready to be folded into the buckle;

' Fig. 5 is an enlarged fragmentary "sectional elevational view thereof, taken through 55of Fig 1; I

Fig. 6 is an enlarged fragmentary sectional view of the operating lever'shown :in an:extended position, the section being taken substantially through 66 of Fig. 2; i

Fig. '7 is an enlarged fragmentary sectional view thereof, taken through l-lof Fig. 1;"--

Fig; 8 is an enlarged fragmentary sectionalv view thereof, taken through 8-8 of Fig. 1;

Fig. 9 is a transverse sectional view thereof.

taken through 99 of Fig. 8, showing the strap grippingjaws means on the slide; I 5- Fig. 10 is a fragmentary side elevational view thereof, partly in section, showing a shifted position of the tool preparatory to shearing the end of the strap; o v

Fig. v11 is an enlarged transverse sectional view thereof, taken through H-H of Fig. 2, showing the strapshearing, forming .and folding means; 1:-

Fig. 12 is an enlarged .fragmentary view taken through lt l2 of. Fig.2, showing the inner side of the head; i W

Fig. 13 is abottomyiew, of the head portion of the tool; and

Fig. 14 is an enlarged-fragmentary View of the operatingv lever shown in an extended position.

The hose clamp or stamp fastening means, shown fragmentarily in perspective in Fig. 4 con. sists of a sheet metalbuckle A and aflexible band or strap B. One end B? of the strap is normally secured to the buckle before'the band orstrap is drawn around the hose or other article tobe clamped. After the band or strap is drawn around-such article, my tool is applied for draw ing the band or strap tightly around the article and for securing the free end B thereof in and to the buckle A.

My strap fastening tool, asshown in the drawings, is embodied in a single machine consisting essentially of a buckle holding head C, a strap tightening jaw means D, "a strap cutting and forming unit E' and a strap'folding unit F.

The'frame on which the several units are supported consists of a head member Iv of thehead 3 unit C, a rear tie member 2, and longitudinal side members or bars 3 positioned at the opposite sides of the frame. The side members are secured at their opposite ends to the head and tie members by screws 4 and 5, respectively.

At the lower side of the head C is provided a buckle holding jaw means C consisting of fixed jaws I at the lower side and rear portion of the head member I, and. movable. laterally spaced jaws l5 at the lower-end of the jaw member 8. The jaws 6" are provided at the lower end of the jaw member 6, which is of inverted U-shape, the upper or cross-portion 6 being pivotally connected by a pin 1 to the opposite lateral sides of the head member I. The jaws S are-adapted toextend to the undersides of the: side walls. Il of. the head member, as shown in Figs. 2 and5.

The jaw member 6 is adapted to be rotated by a lever 8 pivotally mounted at the forward end and between. the side. walls I of, the: member I. This lever has. a central cam 8 and other cams B at the opposite sides: of: the former. The cams 8 perform. a. double. function, namely that. of opening the jaw means by'rocking; thejaw membe: 6 about its; pivotall axis-,. when. the. lever 8.- is raised to its dotted line position,.showmi'n Fig. 5, and: alsm for locking the jaws; EP- in closed positiom when the lever 81 is; in: its; normal lowered position, shown by solidzlihesirrFigfi; When opening; the; jaw;. the: cams 8. are adapted: to: engage 9.. lug 5P extendingupwardly'fromthe jawm'emher 6 directly above its pivotal axis. When locking theajaws 6 in closed position, the same cams 8 engage. shoulders 6 at the upper and rear portionsof the j'awmember B2 The jaws I and 6 are adapted to clamp the buckle A, and these jaws.- are so designed, by bevelling the jaws; that when the head is placed over the buckle, thejaws" are adapted to pick up the buckle, raise andclamp the same betweenthejaws when the lever 8 is depressed.

when the strap is drawn around the article to be clamped, the end B thereof is threaded through the buckle A below a pawl 9 which is plvota-lly' mounted at its upper end on a pin- 1, on the head I, but between the legs of the jaw-memher 6. The lower end of the pawl hast'ransverseserrations- S -Which are adapted to gripthe strap B fromthe topside abovethe buckle A. The pawl 9' is normally urged forwardly at its lower free end, about its pivotal axis by a spring I I". The cam 8, above mentioned is adapted toen.- gage a ing B 'eXtending forwardly from the. upper and pivoted portion of the pawl, and is. thereby adapted to rock the pawl about its pivotal axis against the action of the spring. I I when the lever B is raised, for raising the serrated. free end of the pawl above the. strap B to permit th latter to be drawn freely through. the buckle A. It. will be. here. noted that the. serrated. portion ofthe pawl isspiral or. eccentriewith-respect toitspivotal. axis sorthat it. isforced against. the strap by the spring l.l,. whereby that the pawl. is more tightly forced. againstthe strap as the latter is attempted to: be withdrawn from. the. buckle.

The. straptightening jaw means is carried in aslide I22. whiclris slidablycarried. at.its. opposite sides on the bars 3. The lower portion. of. the slide is provided. with ahorizontal: slot. L25 cut into. one side: of. the slide. The free end of the strap B is adapted to extend from the buckleA through: this slot, as: indicated. by dotted lines in Fig. 8; The jaw means consists of aserratedjaw on pawl member Iii which is pivotally mounted flnzthe: forward; of a. jaw or pawl; carrieror support l4 pivotally mounted in a central vertical opening li of the slide I 2 and mounted, by a pin l8, on the opposite side walls forming the opening. At the upper portion of the slide is positioned a lever IS, the lower portion of which is pivotally mounted, by a pin l5, at the upper portion of the opposite side walls of the slide and within the opening IZ The' slide [2 is moved forwardly and backwardly' on the frame bymeans of an operating lever i6 having at one end a longitudinally slotted portion Hi which is pivotally mounted at its end on the. upper portion of the rear tie member 2. The intermediate or slotted portion l6 of the operating lever IB is connected to the intermediate, portion. of the. lever l5 by a link H. The slide I2 is moved forwardly on the frame by rocking? the operating lever f6 forwardly, the link I! engaging the upper portion of the rear wall l2 of. the slide, within. a recess l2. ,.f-or limiting the rocking movementlof. the lever [5, thereby resulting inthe. forward movementof the slide. Such. movement of the lever l5 about its pivotal axis. also: causes pivotal movementot the. jaw carrier H; The lower end: of the lever- I5 is extended; slightly beyond its pivotal. axis, as indicated by I53, and this; extended endengages a. recess por tion: Min thejawcarrier, thereby.- slightly rocking the; jaw carrier about its pivotal axis on thepin. 1.8-. When the slide is moved forwardly, the: lower end of the lever l5 rotates the jaw carrier in. a clockwise. directibn, raising the jaw' member l3: from the strap. B; As. the. slide [2 is drawn. backwardly, the lower end of the: lever l5 rotatee the jaw carrier in the opposite, or counter-clockwise, direction tending to force. the: strap B against the wall IZ forming the lower wall or the slot l2. Since the jaw member [3 1's eccentrica-lly mounted onits pivotal axis, backward drawing of the slide l2 causes the jaw member [3 tobeprog-ressi'velymore tightly forced against the strap B, and thestrapagainst the lower'wall I! of the slide, thereby drawing the strapB with the slide through the bucki'eA, the pawl 9 bein pivotally mounted, to swing out of engagement, with the: strap to permit movement of the strap B in. such direction.

On the. forward end of the slide is reciprocally" mounted in a, vertical direction the cutter or shear member 2| this shear member being slid.- ably secured to the. frontside of the slide [2' by plates. 22;, A compression spring 23. normally urges the shear member in a raised positionwith its shear or cutting portion ii at the lower end, raised substantially free. of. the slot 12%. so. asnot to interfere with the. drawing of the. strap B. through the slot. The lower wall H of the slide it. has a shearing. edgel2 cooperating with the shearing edge. 2| of the; shear member for cut.- ting; the surplus end from the strap B. after itis tightened about the article to be clamped.

On the upper free end of the lever I5 is a pivotal; extension 24 which is adapted to be manually shifted to the solid line position, shown in Fig. 8, so that'the free end of this extension may engage a recessed portion. 2| at, the upper end of the shear member when the lever l5 is,forced'. to its forward position.

On the lower. end of the shear member 21. is provided a forming portion. 2 IF, the lower end of which is adapted to. be. forced below the upper side of the forward. end of the. wall I2 of theslide [2, thereby bending upwardly the portion of the strap or hand between the-sheared-oil and and the forward end of the wall l'2, this upwardly bent portion being designated B in Fig. 4.

Thus the initial downward movement of the shear member is adapted to shear the end of the strap 13, and continuous downward movement 'of'" ing lever 16 may be changed to either the upper solid line position shown in Fig. 2, or the lower position shown by dotted lines, and designated H, in Fig. 2, or an intermediate position. It will i be further noted that such various connections of the link 'l'l to the slotted portion 16 of the operating lever l6 may be employed for drawing the strap B through the buckle.v Progressively more leverage may be applied to the operating lever l6. and consequently greater pulling force applied to the strap B, as the rear end of the link I1 is connected nearer the pivotal mounting of the lever I6. It will however be noted that operation of the shear member 2| for shearing and forming the strap B may be effected by the lever l6 and link I! when connected only as shown by solid lines in Fig. 2.

' The pivotal connection between the link I! and the operating lever [B may be quickly changed by reason of the connection shown in Fig. 6. The slotted portion of the operating lever It has spaced enlarged circular recesses (6 The operating lever I6 and the link I! are connected by a pivot screw 26, the shank 26 extending through the slot W, and the head 26 being positioned in one of the circular recesses I6 The end'of the shank 26 is reduced, as indicated by 26 and over this reduced end is secured a cup nut 21. Within the cup' of the nut and against the link I! is a compression spring 28. The inner end of this cup nut may extend'into a'recess l'l concentric with the hole for'the shank of the pivot screw.

The cup nut 21 may be depressed against'the action of the spring 28, ejecting the head 26 from the recess [6 and thereby permitting the shank of thepivot screw 26 to be moved within'the slot I6 untilthe head 26 is moved opposite another desired circular recess [6 within the operating lever l6.

After the end of the strap 13 is formed with the tongue B it is in condition to be folded into the buckle A by forcing the free end of the" strap between the edge of the folded over portion A of the buckle'and the arched portion A thereof, or as shown in detail in my copending application, Serial No. 568,577, filed December 18, 1944;,

now abandoned. 1

This folding of the free end of the strap B into the buckle is effected by a folding device provided at'the forward end of the slide. This folding device, as shown in the drawings, is in the form of a folding member 3i which is pivotally mounted on the forward end of the slide member i2. The folding member 3! may be of U-shape, the ends of the legs 3 l being pivotally mounted at the opposite sides of the slide, inwardly from the bars 3, and above the slot l2 of the slide. On one of the legs 3| of the folding member is provided a lever 32 for manually moving the folding member about its pivotal axis to either the operative or folding position, shown by dotted lines, or the out-of-the-way that the pivotal connec position, shown by solid lines in Fig.2; The: connecting or cross-portion 3| of themember- 3| contains the folding portion of, the member."-

The upper edge of the cross-portion al is bevelled forwardly and downwardly as'indicated by 3, and the lower portion of' the'front edge is also bevelled as indicated by 3!. When the folding member 3| isin the position shown by dotted lines in Fig. 2, forwardmovement of the slide by the forward shifting of the operating.

lever 3 causes the upwardly bent. end of the strap to be engaged by the bevelled portion 31 and raised thereby. At the forwardportion 'of its movement the cross-portion ill of the folding member is forced below a shoulder i on the head member. Continuous forward movementof the folding member causes-continuous raising of the free end of the strap, and the-bending thereof about the near edge of the buckle, causing the free end of the strap'tobe forced below the arched portion A of the buckle. The bevelled portion 3! of the folding member then-comes into action, forcing the free end of the strap below the arched portion A and at the same time compressing the free end ofthe strap against the turned over portion A and also pressing the arch portion A tightly over the free end of the strap.

The slide is then withdrawn and released by raising the lever 8. v

The forward position of the slide l2, when folding the end of the strap TB under the arched the buckle portion A of the buckle A, is, in this instance;

forwardly of the shearing position of-the slide.

The stop 25 may therefore be pivoted on the rear or connecting wall l of the head member, which wall provides the aforementioned shoulder 1. When the folding member Si is lowered to the dotted line position of Fig. 2, and the slide 52 is moved forwardly; the member 3! will raise the stop 25 so that the member 3| may move under the shoulder l. The pivotal stop 25 may be bifurcated so as not to interfere with either the forward die portion'of the slide or the die portion 21 of the shear member. .The stop 25 may fall to its normal stop position by gravity when the slide I2 is withdrawn.

The folding member 3| is normally carried in a raised out-of-the-way position in front of 'the slide 12. As shown, the shear member 21 has-a transverse recess 21 at. its forward side for re-' I ceiving the cross-portion 3 I? of the folding momher. The folding member is shifted from the solid line position to the dotted line or operative position when the slide iswithdrawn. Aspring or other suitable member (not shown), may be provided adjacent the pivotal axis of the folding member 3! for holding the same at either end in out-of-the-way or in operative positions.

The operating lever, shown in Fig. 14, is made telescopic, consisting of an outer tube Ni and an inner rod l6. The tube has a'pin lfi which extends into a longitudinal slot It in the rod. The slot may have transverse portions or re cesses at its ends (only the recess at the'outer end of the slot being shown) for locking the rod in either of its extreme positions.

While operation of the tool appears clear from the foregoing description, the operation is briefly described as follows: In connection with a strappassed around a package or the like and engaged with and passing through the buckle, the tool is laterally engaged with the strap which passes through the open slot in the slide. The head structure rear jaws are caused to engage the' rent buokleroniv each side of." ther st'rap,; after: the: buckle? clampingjaw releasedqto engag'eethei-forwarrliside portions'aof the buoklei andlsimultaneouslys the strap engaging... panel is moved:' into engagement with the strap I passing; .At this time. the. free end ofi'the' strap extends through theslide beneath the cutting, folding and sealingipivoted member" on thtslide; operation of the lever by a swinging through thebuckle;

and pivoted member is free-for movement to another clamping. position: with respect to the strap. Successive operation of the slide producesxprogressivettightening: of the strap until the desired tightening. is accomplished. When thisds-d'one; the manual control is-shifted so that forward movement ofthe slide effects, first, artcutting; of' therstrap to the desired end length, the forming thereof iwith an upward bend, and on further back and forth manipulation of the slider'afolding andsealingof the strap into the buckle is obtained.

Though I-have shown and' described a particulan constructiom.combination; and arrangement ofipartsand portions, I do not wish to be limited tothe same, but desire to include in the scope of my. invention the construction, combination, andarrangement substantially as set forth in the appended claims.

I- claim:

1..In.'a strap fastening tool for fastening a strap to a buckle, a frame having a head, with buckle and strap engaging means, a slide on theframaan operatinglever mechanism on the rearlof. the frame pivotally connected to the slide for reciprocating the same, the forward end of the slide having-a shear portion, a shear memberrmovably. mountedon the slide to move at right angles to the direction'of movement of the slide. and'adapted to engage the shear portion, andmeans connected with the lever mechanism for operatinglthe'shear member at one end of the stroke. of .theslide, the shear'portion and the shear member havingfforming die portions in connection therewith for bending. the: sheared endofthe'strap. upwardly. by continued downwardmovement .of the shear.

2'. In. a strap fastening. tool for fastening. a

strap endto a,-buckle,:a..frame having a head.

Withbuckle and. strap engagingmeans, a slide on the frame-having anopen slot to receive astrap extending through the slide, aleverv mechanism on the frame .pivotally connected to the slide for reciprocating the same, a shear member movably mountedon the slide to move at right anglesto thedirection of movement of the slide'for shear.- ing-..the strap intheslide, means on the lever for: operating the shear member at the forward end of the stroke of. the-slide, a strap-folding member pivotallvmounted at the forward end of theslide, said folding member being: normally located in an out-of-the-way position but shiftable. downwardly about its pivotal axis forwardly of the slide, the forward end of the foldingmember belngshaped for folding. the sheared endof Ithe strap over: the buckle andof folding said endathereinto... I

Inna: strap fasteningtool: for. fastening; a: strap to :a bucklega' IramehavingEa-Iheadat ow end; said head-being1 provided; with. abuckle holdingjawat itslrear portion, a movable-dew pivoted. on therhead. inzfront: of: and-'imopposed relation to r the: rear. jaw; cam means: pivotall! mounted-on the head', engageable-with thermonble' jaw; for: closing, the latter: toward the: rear jaw for clamping. the buckle; a. pawlpivoted onwthe: head alongsiderthe movable-jaw, engage-- able by the cam means, and provi'ded'with m band-.grippingi portion at its: lower end; said grippingportiorr being positioned. abovethedawm forgripping; the. band when l the: buckle: 15m engaged by thew jaws; resilient-means? for: normally. biasingxsaid grippingvporti'on forwardlyifor.foreillBzthE strap against .therbuckle; said cammeanw when reversed .being 'capablecof moving-,th'e-pawl against the action-of theresilient meansifor ree -moving-:the-gripping:portion from the band when".

the. jaws' are' open; saidpawlbeingfree-to bemoved-:against the iaction. otrtheresilient means-v to. allow the strapa to be: drawn. past theZ-pawl when the 'jaws -a-reclosed. I

4. Iniawstrap fastening tool=-fon fastening a strap to. a bu'ckle; a: frame-having .a head: at one end; said head being provided with :a;-buckle -hold-' ingjaw at its rear portiomamovablejaw pivotedon theheadinfront-Iof and in opposed :relation: to the rear jaw, cam means pivotally mounted on the: head;- engageableiwith .the :movable j aw, for closing thelattertoward 'therea-r- Jaw for: clamp.- ingi'thefbuckle a. pawl. pivoted. on the head-:coaxially withthe movable jaw, engageable byz-the cam means, and provided with a bandi-gripping' portion at its lower. end; said-gripping portion: being positioned above the: jaws: for gripping the:- band when the buckle is: engaged by the: jaws; resilient means'for normally biasing said grippingz portion forwardly for forcing the strap against: the' buckle,"v said cam: means when reversed: be-'-- ing: capable :of moving;the: :pawl against: thean tionl of the resilient: means for removing the" grippingportion from theband-when the-jaws are"- open, ,said pawl being free "to-bemoved' against. the- 'a'ction of the resilient means.- to allow the strap to be-drawn past the:pawl when'therjaws areclosed:

5. In" a strap fastening tool for fastening? aw strap -to.-a'-buckle; a frame having a head' at one" end; saidhead being provided. with a: buckle: holding jaw at its rear portion, a movable jaw pivoted on the head in frontof and in'opposed relation to the rear jaw, cam means pivotally' mounted on the-head and provided withiacam' portion, engageable with the-movable'iaw, for closing the latter toward therear jaw for clamp-- ing the buckle, a pawl pivoted on'the head along-- side the movable'jaw', and provided with'aband gripping portion at its lower end; said gripping portion'being positioned above the jaws'for-gripping the band when the buckle is engaged by the jaws, resilient meansfor normally -biasing said portion forwardly for forcing thestrap" against the buckle, said cam'means having an other cam portion for moving the pawl'a'gainstthe action of the resilient means for'removing the gripping: portion fromthe band when thejaws are' open, said pawl being free to be moved against the action oftheresilient meansto allow the strap to be drawn-past thespawl. when the jaws are closed.

6. In astrapfastening. tool. for. fastening. a strap to a buckle, aframehaving'a head at one. end,- said-head being.- provided with a buckle- 9 holding jaw at its rear portion, a movable jaw pivoted on the head in front of and in opposed relation to the rear jaw, cam means pivotally mounted on the head and provided with a cam portion, engageable with the movable jaw, for closing the latter toward the rear jaw for clamping the buckle, a pawl pivoted on the head coaxiall with the movable jaw, and provided with a band-gripping portion at its lower end, said gripping portion being positioned above the jaws for gripping the band when the buckle is engaged by the jaws, resilient means for normally biasing said portion forwardly for forcing the strap against the buckle, said cam means having another cam portion for moving the pawl against the action of the resilient means for removin the gripping portion from the band when the jaws are open, said pawl beingfree to be moved against the action of the resilient means to allow the strap to be drawn past the pawl when the jaws are closed.

MICHAEL J. McANENY.

10 REFERENCES CITED The following references are of record in the file of this patent:

v UNITED STATES PATENTS Number Name Date 610,881 Clark Sept. 13, 1898 772,391 Baldwin Oct. 18, 1904 826,077 Wood July 17, 1906 978,694 Carrier Dec. 13, 1910 1,365,851 Reynolds Jan. 18, 1921 1,408,846 Turner Mar. 7, 1922 1,666,134 Griswold Apr. 17,1928 1,752,495 MacChesney et al. Apr. 1, 1930 1,885,742 MacChesney et al. Nov. 1, 1932 1,988,534 Abbott Jan. 22, 1935 2,040,576 Timmerbeil May 12, 1936 2,080,329 Mortimer May 11, 1937 2,150,234 McKee Mar. 14, 1939 2,312,400 Govanus Mar. 2, 1943 2,368,969 Cleveland Feb. 6, 1945 

